Struct SyncHookJSONOutput 

pub struct SyncHookJSONOutput {
    pub continue_: Option<bool>,
    pub suppress_output: Option<bool>,
    pub stop_reason: Option<String>,
    pub decision: Option<String>,
    pub system_message: Option<String>,
    pub reason: Option<String>,
    pub hook_specific_output: Option<HookSpecificOutput>,
}

Synchronous hook output with control and decision fields

This defines the structure for hook callbacks to control execution and provide feedback to Claude.

Fields

continue_: Option<bool>

Whether Claude should proceed after hook execution (default: true)

suppress_output: Option<bool>

Hide stdout from transcript mode (default: false)

stop_reason: Option<String>

Message shown when continue is false

decision: Option<String>

Set to “block” to indicate blocking behavior

system_message: Option<String>

Warning message displayed to the user

reason: Option<String>

Feedback message for Claude about the decision

hook_specific_output: Option<HookSpecificOutput>

Event-specific controls (e.g., permissionDecision for PreToolUse)

Trait Implementations

impl Clone for SyncHookJSONOutput

fn clone(&self) -> SyncHookJSONOutput

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SyncHookJSONOutput

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SyncHookJSONOutput

fn default() -> SyncHookJSONOutput

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SyncHookJSONOutput

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SyncHookJSONOutput

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.